Dual Audio - Why is it so rare? - General Questions and Answers

Hi Everyone.
I am curious as to why Dual Audio seen on Samsung Galaxy flagships is not really found on other brands or Samsung's mid-rangers. I have a few portable BT speakers and it would be really nice to combine their sound for a more room filling experience.
Dual Audio was first introduced on the S8 along with Bluetooth 5. It is touted as a BT5 feature, but as Gary from Android Authority explains, the advancements of BT5 is only applicable to BTLE and supported devices. Samsung's Dual Audio works with devices that stream over BT Classic.
I am thinking that a BT5 radio in a source device has the hardware capability to stream audio to two devices over BT Classic. This makes me think that Dual Audio is a software implementation which can be done through the driver or an app. Speaking of which, Tempow developed a BT profile, TAP, which can do Dual Audio. Motorola and TCL has adopted TAP into their phones.
There are suggestions that Samsung has 2 BT radios in their devices to enable Dual audio, but I don't think it's likely, since Tempow seems keen on bringing their TAP to the masses with nothing to suggest a 2 radio requirement.
So now I am really curious about why it isn't implemented on more phones? Or better yet, on custom ROMs?

Hello i m trying to search the same question i have a old j4 plus that have dual audio but the half off the screen is busted

SooBCooL said:
Hello i m trying to search the same question i have a old j4 plus that have dual audio but the half off the screen is busted
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Same, i have tried various threads and sites but nowhere there's answer for this....
No developer have worked on it since 2017, there are requests over this feature but no help over it till now.
I'm waiting for it

Related

rSAP SIM Access Profil possible

Hi,
is it possible to use rSAP or SPA and activate in the firmware?
I want to use it with my car bluetooth.
Cheers
Any word on this?
Current model VW/Skoda/Audi only support rSAP profile, which is a royal pain.
rSAP
Hi,
got my new VW with the premium phone set. I've found on the german wikipedia the list of rSAP supporting phones. Most Nokia models seem to support it as the premium phone set is actually modified Nokia BT set. I also found that the rSAP is supported by all HTC except G1 and one other model. This got me thinking if it might be more software than hardware issue of android which might not support rSAP rather than the phone itself. Anyone got any ideas about it, cause I don't wanna change my phone to nokia as my network does not have any other HTC mobiles in offer.
gacekk said:
Hi,
got my new VW with the premium phone set. I've found on the german wikipedia the list of rSAP supporting phones. Most Nokia models seem to support it as the premium phone set is actually modified Nokia BT set. I also found that the rSAP is supported by all HTC except G1 and one other model. This got me thinking if it might be more software than hardware issue of android which might not support rSAP rather than the phone itself. Anyone got any ideas about it, cause I don't wanna change my phone to nokia as my network does not have any other HTC mobiles in offer.
Click to expand...
Click to collapse
I'm pretty sure you are right that it NOT a hardware issue as much as a firmware issue. The protocol has just not been developed for Android.
The reason: Infancy and lack of subscriber base at this time. Not many people in the grand scheme of things have Android and even fewer have rSAP devices AND Android. Both platforms would have to gain more popularity before support will develop. Sad but true.

Call Recording

Hi, as you know HTC (and all others) disallow call recording in their phones since the times of Windows Mobile 2003. This problem is now on the Android devices too. There are many opened issues on Google code for this problem, that gained a lot of stars, especially this one code.google.com/p/android/issues/detail?id=2117 (sorry, I'm new and not allowed to post links)
There are workarounds like recording trough loudspeaker, but as you know this is far from useful.
However, there is no official answer from Google about this "issue". However, last week the Koreans released a ROM for Samsung Galaxy S, that has built-in native call recorder.
This is from the Samsung's Hub:
Samsung has released a new update for South Korean Galaxy S (SHW-M110S) owners. The update DH09 is not a Froyo update but it does bring worthy additions to the handset. Few visible features are the inclusion of Swype keyboard, ability to record conversations and an app to detects the slope of the magnetic field sensor.
Other than that, the DH09 features RAM management, includes a 3G data widget, downloadable fonts and improves on many other fronts like Allshare, Google Maps software, call quality etc.
The update is available via Kies.
Click to expand...
Click to collapse
There is a screenshot as attachment (it's in Chinese):
Is there any way to break apart this ROM (DH09) and bring this or similar functionality to Froyo for Desire or Nexus or anything...?
Could you explain me where exactly is the problem for successful two-way call recording? Some say it's in the hardware, other think it's in the ROMs of the manufactures or in Android in general. However in Android emulators it works perfectly!
waooooo....someone please extract it
Anyone? Any answer? At least people who hacked WM ROM's to explain me where exactly is the problem for two-way call recording.
Call Recording is something very useful and I think is a "must have" function in today's world. However big companies and carriers are afraid letting people do that for legal reasons. That's why I think they will never allow us to do that out of the box, so we (the users) have to make it reality with custom hacked ROMs, like we did previously for Windows Mobile devices!
Anybody say something, please
The voice streams were handled by the baseband processor, it's that the baseband firmware aren't setup to offer the streams to the application processor that's limiting the ability to truly record a call. The Android system long has the API implemented, but it can do nothing in this case.
I remember there was an explanation in the Google code issue report mentioned above.
Here it's: http://code.google.com/p/android/issues/detail?id=2117#c226
Since the baseband firmware is close sourced and available in binary only, I doubt if the brilliant hackers here can do anything about this.
So, get a Galaxy S (the true one, not even those US variants) if you really want this feature.
Thanks for the reply. So, the bad guy is the baseband processor. iPhone guys hack the baseband processor of the iPhone to unlock it for different carriers. So, I guess it's doable to hack the firmware for two-way recording too.
I read here in XDA Devs that someone found a "cure" for HD2 very easily, just by editing the registry - xda-developers.com/windows-mobile/two-way-in-call-recording-on-hd2-fixed/
HD2 uses the Qualcomm’s Snapdragon QSD8250 processor with built-in baseband processor. The same is used by HTC Desire, HTC Dragon, HTC Mozart, Nexus One, Dell Streak, SE Xperia X10 and many more.
So, why with HD2 is so easily, but with Nexus is not? What is the difference when they use the same CPU with the same baseband processor built-in? Is the baseband firmware different for Android OS and Windows Mobile? If so, how they run Android on HD2 and the cellular is working?
Just my thoughts
I found TotalRecall on the Android Market and it records both sides of my conversations.
jamesmannes said:
I found TotalRecall on the Android Market and it records both sides of my conversations.
Click to expand...
Click to collapse
Many call recorders can record both-way, but only with the use of speakerphone. I suspect it's the same for TotalRecall, judging by the ratings of the 14-day demo (http://www.appbrain.com/app/total-recall-call-recorder/com.killermobile.totalrecall.trial)...?
mishoboss said:
Thanks for the reply. So, the bad guy is the baseband processor. iPhone guys hack the baseband processor of the iPhone to unlock it for different carriers. So, I guess it's doable to hack the firmware for two-way recording too.
I read here in XDA Devs that someone found a "cure" for HD2 very easily, just by editing the registry - xda-developers.com/windows-mobile/two-way-in-call-recording-on-hd2-fixed/
HD2 uses the Qualcomm’s Snapdragon QSD8250 processor with built-in baseband processor. The same is used by HTC Desire, HTC Dragon, HTC Mozart, Nexus One, Dell Streak, SE Xperia X10 and many more.
So, why with HD2 is so easily, but with Nexus is not? What is the difference when they use the same CPU with the same baseband processor built-in? Is the baseband firmware different for Android OS and Windows Mobile? If so, how they run Android on HD2 and the cellular is working?
Just my thoughts
Click to expand...
Click to collapse
I hope I have an answer but, getting the Galaxy S is still the most fool-proof way thus far.
jamesmannes said:
I found TotalRecall on the Android Market and it records both sides of my conversations.
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Click to collapse
Which phone you use? Which Android version? I hope you record the conversation without speaker turned on, right?
999phonebug said:
I hope I have an answer but, getting the Galaxy S is still the most fool-proof way thus far.
Click to expand...
Click to collapse
OK, does somebody tested the Galaxy S with TotalRecall or other call recording software? Is it working out of the box or do I have to preflash the ROM with the korean's one? And if I do, could I continue to use my phone normally and in English language?
mishoboss said:
OK, does somebody tested the Galaxy S with TotalRecall or other call recording software? Is it working out of the box or do I have to preflash the ROM with the korean's one? And if I do, could I continue to use my phone normally and in English language?
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Ooops... I wasn't aware only the South Korean firmware has native support for call recording... I wonder if it's available in the latest 2.2/Froyo global release...?
999phonebug said:
Ooops... I wasn't aware only the South Korean firmware has native support for call recording... I wonder if it's available in the latest 2.2/Froyo global release...?
Click to expand...
Click to collapse
Any one know how to get the "real" Galaxy S? I have been searching the internet to no avail?
Can some Genius please tell me how to flash the new Korean Froyo http://translate.google.at/translate?js=n&prev=_t&hl=de&ie=UTF-8&layout=2&eotf=1&sl=ko&tl=en&u=http%3A%2F%2Fmatpclub.com%2Fboard%2Findex.html%3Fid%3Duser9%26no%3D5203 onto a European Galaxy S ? Thanks
airplus said:
Any one know how to get the "real" Galaxy S? I have been searching the internet to no avail?
Click to expand...
Click to collapse
Tried ebay?
dillovic said:
Can some Genius please tell me how to flash the new Korean Froyo http://translate.google.at/translate?js=n&prev=_t&hl=de&ie=UTF-8&layout=2&eotf=1&sl=ko&tl=en&u=http%3A%2F%2Fmatpclub.com%2Fboard%2Findex.html%3Fid%3Duser9%26no%3D5203 onto a European Galaxy S ? Thanks
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Click to collapse
Anyone????
there's an utility called AirVoice which claims to support voice recording without speakerphone on rooted g2 (htc magic) and g3 (htc hero) with certain ROM versions.
http://www.airrunner.cn/wordpress/
999phonebug said:
Ooops... I wasn't aware only the South Korean firmware has native support for call recording... I wonder if it's available in the latest 2.2/Froyo global release...?
Click to expand...
Click to collapse
No, it's not available in Froyo. This is only for Koreans. However the important thing here is that CALL RECORDING IS POSSIBLE on Galaxy S. As you stated in your first post, to record a call Android needs access to the baseband processor. Galaxy S uses own CPU called S5PC110 (ARM Cortex A8) with built-in baseband processor, which is different from the baseband that is used in the new HTC devices, SE Xperia and Droid. As we all know these devices doesn't work with the call recording apps on the Market. Samsung Galaxy S has really good chances to work properly with these apps!
SO, SOMEBODY PLEASE TEST!
999phonebug said:
there's an utility called AirVoice which claims to support voice recording without speakerphone on rooted g2 (htc magic) and g3 (htc hero) with certain ROM versions.
http://www.airrunner.cn/wordpress/
Click to expand...
Click to collapse
Nice! However for the EPIC STUPIDITY of the most users who gave low app rating, the author unpublished it from Market.
His app clearly shows that two-way call recording IS POSSIBLE, even on certain hardware and rooted Android. The author notes that his app only works on Hero and Magic. They use Qualcomm® MSM7000 and MSM7200, probably with the same baseband processor and he found a way to access it. I will try to contact him for more info and I hope some source code...
Hi,
I tried some apps like Ultimate Voice Recorder, Total Recall, Call Recorder, they all pick up sounds from the second you press dial so that you hear on the recording the phone ringing at the other side, and they stop a few seconds after the conversation starts. I cold hear on the recordings bouth sides, but no recording is over 10 seconds, no matter what settings I choosed. I didn't use the speaker mode.
Maybe some files need to be run as administrator...don't know... I'm new to android and don't know much about linux.
The other apps that claim to be able to record calls are designed for Android 1.6 so it may be possible but not with 2.1 or 2.2
As far as I understood from what I've read, the korean version of I9000 has also a different hardware not just firmware, so it might be more than just a software adjustment needed.
ccris said:
Hi,
I tried some apps like Ultimate Voice Recorder, Total Recall, Call Recorder, they all pick up sounds from the second you press dial so that you hear on the recording the phone ringing at the other side, and they stop a few seconds after the conversation starts. I cold hear on the recordings bouth sides, but no recording is over 10 seconds, no matter what settings I choosed. I didn't use the speaker mode.
Maybe some files need to be run as administrator...don't know... I'm new to android and don't know much about linux.
The other apps that claim to be able to record calls are designed for Android 1.6 so it may be possible but not with 2.1 or 2.2
As far as I understood from what I've read, the korean version of I9000 has also a different hardware not just firmware, so it might be more than just a software adjustment needed.
Click to expand...
Click to collapse
I presume you use Galaxy S, right? That what you said is really interesting! The fact that recordings contain both sides is very encouraging! The 10 seconds bug I guess is due to some rights or something. I don't own Galaxy S to do further investigation of this problem, but I hope somebody who own it and is deep in Android to do it.
I don't think the Koreans version has different hardware. At least it uses the same CPU, and that means the same baseband processor.
Any news...?

[Q] A bad buy, need advice

I previously had no Android experience and recently bought Xperia X10 Mini Pro as suggested by friends in a haste as an upgrade from my Nokia E63. After purchasing it, I found it out to be more of a downgrade.The phone itself is outdated but that is a different issue.
Web browsing is better, I got GPS and music is a major overhaul. But the inability to do proper multitask and lack of GSM-GPRS Dual Mode means this is not gonna replace my E63. Sadly, as deep as I have searched, Dual mode is not as easily available among Androids and proper multitasking requires huge RAM compared to Nokia. So I need suggestion on a cheap android that can truly replace, suppose a Nokia E71. Does such an Android phone really exist?
ZTE blade maybe the best one for the guy had no Android experience, or a better one, MOTO defy.
I don't think so
waylz3344 said:
ZTE blade maybe the best one for the guy had no Android experience, or a better one, MOTO defy.
Click to expand...
Click to collapse
ZTE models are sadly not available Here in Kolkata. That model would not have suited me either. But DEFY is a seriously good mobile. Got good RAM, Armv7, PowerVR GPU, long battery life. Price is within my capability. It is also water/scratch/dust resistant. Are u sure that it supports dual mode? The website does not mention.
I didn't understand the issue with camera clearly, If I get the GREEN version does that mean camera will never work for me using CM9? [I am damn sure India gets green. Guess I'll have to sacrifice ICS then]
From this post it seems that Moto Defy supports Dual Transfer Mode. The only concern that remains now is about ICS update and the camera. Can anyone clarify that?
When it comes to pricing, no one can beat Nokia
There are lots of cheap Android phone available in the market, but you have to compensate in the screen resolution, speed etc. I wud recommend you Galaxy S (i9000) if you can afford...cheaper than dat is Galaxy ACE & Galaxy GIO.
Check if HUAWEI is available in your location, they are the cheapest highly loaded Android devices here in Oman.
zte monte carlo nice
Problem is, none of the mobiles you mention has Dual Transfer Mode in official specs, while even the latest Nokia, the Lumina 800 mentions Dual Transfer Mode (MSC 32) clearly in its specs. It is sad how Symbian died due to lack of interest from the part of application developers, but it had the best multitasking among all mobile OSes. In Android, whenever I minimise Opera Mini to do something else, I am always afraid that perhaps opening the next file will unload the browser in background; while in S60, u can have 20 apps running and 20 tabs open in browser in a handset with only 128 MB RAM, if pushed to its limit, the device will reboot but never ninja kill apps in background.
I can provide many links where people complain about lack of DTM in their Androids. Sony Vivaz is a S60 and it supports DTM.
Some said that editing build.prop allows DTM in some HTC phones. I have tried that in X10 Mini Pro and it did not work. Seems the radio antenna itself is cheap.
I recently ran a test in my X10 Mini Pro by starting a file download in it and sending a barrage of SMSes from another phone simultaneously. The download failed, none of those SMSes arrived ever.
So please mention how u know that those devices suggested have DTM. It is necessary.
I think I need to update my question. From this post, it seems that SE does not provide DTM as 3G already supports multiple connections. SE may think that there is no necessity of this technology in this age of 4G but in India 3G is both costly and rare.
I need GSM DTM, not the simultaneous voice and data capability of 3G.
Edit: I have subscribed for 3G. I was shocked to find that good quality 3G is cheaper than US here. It will be activated within 24 hours. Lets see if dual mode works now; else I'll have to get another handset with better radio.
Update: Ok HSDPA allows simultaneous voice and data in this handset. But 3G drops during calls perhaps due to poor signal so I need stock ROM to force WCDMA only.

[Q] Bluetooth smart compatibility

I want to buy a cardio monitoring chest belt. I only find "bluetooth smart" products, but it seems that the one mini bluetooth 4.0 is not "smart"...
Do I have to expect a compatibility issue ?
Do you know if since the OTA update to android 4.3, the bluetooth technology of the phone has became smarter ?
Thanks for your advices
pogoff said:
I want to buy a cardio monitoring chest belt. I only find "bluetooth smart" products, but it seems that the one mini bluetooth 4.0 is not "smart"...
Do I have to expect a compatibility issue ?
Do you know if since the OTA update to android 4.3, the bluetooth technology of the phone has became smarter ?
Thanks for your advices
Click to expand...
Click to collapse
My understanding is "smart" in this case means Bluetooth Low Energy [BLE]. Qualcomm SOC used inside our Mini doesn't support BLE. That said some Samsung and many Xperia phones support BLE (or maybe ANT directly) probably by the means of dedicated chip.
I have got myself Polar Wearlink Bluetooth (http://www.polar.com/en/products/accessories/Polar_WearLink_transmitter_with_Bluetooth) and it works well with the Mini.
The best way to get an answer is
Thanks for you answer. I think the best way is to test a "bluetooth smart" device.
Thats what I'm going to do, and I will feed you back.
theoretically after 4.3 smartbluetooth works , im flashing the 4.3 ROM later on today , Ill see if it works , I have a mio alpha watch .lets see if finally works with endomondo
Good news, our phone is smart !
OK guys, it works. Tested with Runalyzer Blue heart rate monitor, and with Runtastic app.
The connection is quickly established and steady.
The bluetooth chipset is compatible, and the upgrade to Andoïd 4.3 is mandatory.
Thanks for your replies.

AptX support?

I found a thread on the OnePlus forums that states there is no mention of aptX support for the One. I know that has something to do with Bluetooth streaming but that's pretty much all I know. Does this mean the OPO may not be able to stream music via Bluetooth in my car? Is it more dependent on my car's hardware? (I've got a 2011 Hyundai Sonata, for the record, and I've tried to google it with no success.) If it can't, even at $350, I'll have to pass. That's a non-negotiable for me. Can someone with more knowledge on the subject please chime in? Thanks.
Sent from my iPad using Tapatalk HD
Aptx is a new codec for Bluetooth audio. Most devices don't even support it right now. As long as as A2DP and AVRCP are supported you should be fine. I don't think cm supports aptx but aptx isn't related to whether or not you can steam music in your car.
Sent from my One using Tapatalk
Yeah. Probably even your sonata sound system doesn't support aptx codec.
A bit more info.
http://en.m.wikipedia.org/wiki/AptX
I would be curious though if the oneplus one supports aptx. I'm thinking probably not.
Sent from my One using Tapatalk
According to the Oneplus Forums it doesn't. However my 3 year old HTC One X does, so APTX definitely isn't that new.
This is going to make me rethink about whether I actually want this phone or not....
Google isn't bringing up any recent information on this topic here, other than a general consensus that the opo *probably* doesn't have aptx. But some mentions that it might be add able? Any ideas on this? Or further information that my Google-fu missed?
I didn't really care before, but I've got a high end Bluetooth speaker coming in the mail, it supports aptx, and so I'm curious thanks all!
tlo07 said:
I found a thread on the OnePlus forums that states there is no mention of aptX support for the One. I know that has something to do with Bluetooth streaming but that's pretty much all I know. Does this mean the OPO may not be able to stream music via Bluetooth in my car? Is it more dependent on my car's hardware? (I've got a 2011 Hyundai Sonata, for the record, and I've tried to google it with no success.) If it can't, even at $350, I'll have to pass. That's a non-negotiable for me. Can someone with more knowledge on the subject please chime in? Thanks.
Sent from my iPad using Tapatalk HD
Click to expand...
Click to collapse
My friend has the same exact car as you and my OnePlus One running CM12 nightlies works perfectly fine via bluetooth. This includes streaming music and answering calls for me.
FatalityBoyZahy said:
My friend has the same exact car as you and my OnePlus One running CM12 nightlies works perfectly fine via bluetooth. This includes streaming music and answering calls for me.
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Click to collapse
That's pretty cool! Yeah the Bluetooth should work fine for most things, but what's being discussed now is higher quality Bluetooth, a special codec called 'aptx'. Bluetooth should work fine without it, but just standard quality only.
To clarify things Herr.
Aptx is a propyitary codec by CSR. BT devices supporting aptx also work without.
However Theres a major difference in audio lag and quality.
Aptx is way supirrior over regular BT IF your sound device is good enought or you wanna watch movies.
On cheap speakers you probably won't hear much difference. On high end headphones you will never go back to regular BT once you had aptx.
That said only a handful of manufacturer support it. Also cyanogen doesn't.
Its not only software but also hardware.
BTW its not just a codec running over the a2dp its a replacement of a2dp
It has almost not lag so watching movies sint a pia and the lowlatency aptx variant has practically no lag
Aptx was initially for pro. BT devices like wireless mics and monitor phones on a production level (studio, concert ...) and sadly there's no alternative right now even close to its performance
bofh999 said:
Its not only software but also hardware.
Click to expand...
Click to collapse
Generally it's implemented in software on the phone (or PC) and hardware in the receiver (headphones, car, etc.) really depends on the processing power available on either end. With that in mind it is technically feasible to deploy support to existing phone, it just needs to be licensed and coded into the platform.
There seems to be aptX working on Oneplus One but you have to use Lineage 14
https://forum.xda-developers.com/oneplus-3/themes/mod-aptx-codec-t3521228

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